Coupler



In a preferred embodiment, the nature of this product is as a device for coupling an air breathing element to an air treatment element, such as a coupler for connecting an air filter to the carburetor of an internal combustion engine.

FIG. 1 is a top, left, rear perspective view of a coupler embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line representations of holes in FIGS. 1, 2, and 7 and underside environment in FIG. 7 are for the purpose of illustration only, and form no part of the claimed design. 

The ornamental design for a coupler, as shown and described. 